{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T06:23:56Z","timestamp":1762064636669,"version":"build-2065373602"},"reference-count":37,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2022,8,25]],"date-time":"2022-08-25T00:00:00Z","timestamp":1661385600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"FACEPE\/NUQAAPE","award":["PRONEX Proc. APQ-0346-1.06\/14","CNPq 465768\/2014-8, FAPESP 2014\/50951-4","PRINT-88887.371647\/2019-00","307397\/2018-1","Norte-01-0145- FEDER-000024","CZ.02.1.01\/0.0\/0.0\/16_019\/0000841"],"award-info":[{"award-number":["PRONEX Proc. APQ-0346-1.06\/14","CNPq 465768\/2014-8, FAPESP 2014\/50951-4","PRINT-88887.371647\/2019-00","307397\/2018-1","Norte-01-0145- FEDER-000024","CZ.02.1.01\/0.0\/0.0\/16_019\/0000841"]}]},{"name":"CNPq\/FAPESP\/INCTAA","award":["PRONEX Proc. 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APQ-0346-1.06\/14","CNPq 465768\/2014-8, FAPESP 2014\/50951-4","PRINT-88887.371647\/2019-00","307397\/2018-1","Norte-01-0145- FEDER-000024","CZ.02.1.01\/0.0\/0.0\/16_019\/0000841"],"award-info":[{"award-number":["PRONEX Proc. APQ-0346-1.06\/14","CNPq 465768\/2014-8, FAPESP 2014\/50951-4","PRINT-88887.371647\/2019-00","307397\/2018-1","Norte-01-0145- FEDER-000024","CZ.02.1.01\/0.0\/0.0\/16_019\/0000841"]}]},{"name":"FCT\/MCTES\u2013Portuguese Foundation for Science and Technology","award":["PRONEX Proc. APQ-0346-1.06\/14","CNPq 465768\/2014-8, FAPESP 2014\/50951-4","PRINT-88887.371647\/2019-00","307397\/2018-1","Norte-01-0145- FEDER-000024","CZ.02.1.01\/0.0\/0.0\/16_019\/0000841"],"award-info":[{"award-number":["PRONEX Proc. APQ-0346-1.06\/14","CNPq 465768\/2014-8, FAPESP 2014\/50951-4","PRINT-88887.371647\/2019-00","307397\/2018-1","Norte-01-0145- FEDER-000024","CZ.02.1.01\/0.0\/0.0\/16_019\/0000841"]}]},{"name":"project EFSA-CDN","award":["PRONEX Proc. APQ-0346-1.06\/14","CNPq 465768\/2014-8, FAPESP 2014\/50951-4","PRINT-88887.371647\/2019-00","307397\/2018-1","Norte-01-0145- FEDER-000024","CZ.02.1.01\/0.0\/0.0\/16_019\/0000841"],"award-info":[{"award-number":["PRONEX Proc. APQ-0346-1.06\/14","CNPq 465768\/2014-8, FAPESP 2014\/50951-4","PRINT-88887.371647\/2019-00","307397\/2018-1","Norte-01-0145- FEDER-000024","CZ.02.1.01\/0.0\/0.0\/16_019\/0000841"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Chemosensors"],"abstract":"<jats:p>Malachite green (MG) is a triphenylmethane cationic dye used in aquaculture practice, although it has been banned in several countries. The illegal use by fish producers, however, persists due to its effectiveness, and ready and cheap supply. To prevent indiscriminate applications, strict control measures with simple analytical approaches are therefore necessary. With this purpose, a novel, cheap and simple method applying electrospun polyimide nanofibers was developed and validated for MG control in water by color image analysis. For detection, a simple apparatus and ImageJ\u00ae software to treat images captured by common smartphones were used. A detection limit of 0.013 mg\/L with a linear analytical response range within the concentration of 0.05 to 0.3 mg\/ L of malachite green (MG) with a correlation coefficient of 0.997 and standard deviation (n = 9) varying from 1.01 to 3.92% was achieved with the proposed method. Accuracy was assessed by recovery assays in water samples and percentages of 96.6 to 102.0% were obtained. The method is robust and suitable for the rapid and reliable monitoring of MG in water.<\/jats:p>","DOI":"10.3390\/chemosensors10090348","type":"journal-article","created":{"date-parts":[[2022,8,25]],"date-time":"2022-08-25T21:28:12Z","timestamp":1661462892000},"page":"348","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Malachite Green Optical Sensor Based on Electrospun Polyimide Nanofiber"],"prefix":"10.3390","volume":"10","author":[{"given":"Fernando L. A.","family":"de Souza","sequence":"first","affiliation":[{"name":"Departamento de Qu\u00edmica Fundamental, Universidade Federal de Pernambuco, Av. Jornalista An\u00edbal Fernandes, s\/n-Cidade Universit\u00e1ria, Recife 50740-560, PE, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3422-3013","authenticated-orcid":false,"given":"C\u00e9lia Gomes","family":"Amorim","sequence":"additional","affiliation":[{"name":"LAQV, REQUIMTE, Departamento de Qu\u00edmica Aplicada, Faculdade de Farm\u00e1cia, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"given":"Alberto da Nova","family":"Ara\u00fajo","sequence":"additional","affiliation":[{"name":"LAQV, REQUIMTE, Departamento de Qu\u00edmica Aplicada, Faculdade de Farm\u00e1cia, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]},{"given":"Dalibor","family":"\u0160at\u00ednsk\u00fd","sequence":"additional","affiliation":[{"name":"The Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Ak. Heyrovsk\u00e9ho 1203, 500 05 Hradec Kr\u00e1lov\u00e9, Czech Republic"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8529-9333","authenticated-orcid":false,"given":"Ana Paula Silveira","family":"Paim","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica Fundamental, Universidade Federal de Pernambuco, Av. Jornalista An\u00edbal Fernandes, s\/n-Cidade Universit\u00e1ria, Recife 50740-560, PE, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1523-5043","authenticated-orcid":false,"given":"Maria Concei\u00e7\u00e3o B. S. M.","family":"Montenegro","sequence":"additional","affiliation":[{"name":"LAQV, REQUIMTE, Departamento de Qu\u00edmica Aplicada, Faculdade de Farm\u00e1cia, Universidade do Porto, R. Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"273","DOI":"10.1080\/10498850.2011.569643","article-title":"Considerations on the use of malachite green in aquaculture and analytical aspects of determining the residues in fish: A review","volume":"20","author":"Hashimoto","year":"2011","journal-title":"J. Aquat. Food Prod. 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